Insulating-support for electric third rails.



PATBNTED NOV. 22, 1904.

.W. H. BARNARD. INSULAQING SUPPORT FOR ELECTRIC THIRD RAILS.

APPLICATION FILED JULY 28, 1904.

2 SHEETS-SHEET 1.

PATENTED NOV. 22, 1904.

W. H. BARNARD. INSULATING SUPPORT FOR ELECTRIC THIRD RAILS.

APPLICATION FILED JULY 28. 1904.

2 SHEETS-SHEET .2.

K0 MODEL.

1st. 775,592.v

UNITED STATES Patented November 2, 1904.

PATENT OFFICE.

INSULATINGI SUPPORT FOR ELECTRIC THIRD RAILS.

SPECIFICATION forming part of Letters Patent No. 775,592, dated November 22, 1904. I Appliqation filed July 28, 1904. Serial No. 218,469. (No model.)

To 0.66 whom it may concern:

Be it known that I, WALTER HUBBARD BAR- NARD, a citizen of the United States, and a resident of New York, in the county and State of New York, have invented certain new and useful Improvements in Insulating-Supports for Electric Third Rails, of which the following is a specification.

My present invention relates to insulatingsupports 1' or electric third rails of electricrailway systems. It has for its object to provide an insulating-support of the character set forth having improved means for securing the base in place on a tie, improved means for securing the insulating-block to said baseplate, and improved means for supporting the rail on the insulating-block, said last-mentioned means comprising an adjustable railclamping device movable on and around said insulating-block so as to accommodate itself to the position and size of the rail placed therein.

- It has for a further object to provide an insulating-support of the character set forth embodying advantages in point of strength, durability, simplicity, and inexpensiveness.

In the drawings, Figure 1 is a side view of my improved support, the clamp being in place. Fig. 2 is a plan view. Fig. 3 is a longitudinal vertical sectional view taken on the line at w of Fig. 2. Fig. 4 is a longitudinal vertical sectional view of a modified form of the support, the clamp being removed. Fig. 5 is a plan view of the base shown in Fig. 4. Fig. 6 is a plan view of a modified form of the insulating-block, showing it of oval shape. Fig. 7 is a plan view of a modified form of the insulating-block, showing it of square or angular shape.

Corresponding parts in all the figures are denoted by the same reference characters.

Referring to the drawings, 1 designates the metallic base, the securing flange 2 of which is adapted to rest on the ties or structure of the railway and has two open-ended slots 2 at one end adapted to receive theshanks of spikes which have been driven into the tie and at the other end has a hole 8, through which a spike is driven into the tie, and it will be appreciated that by this arrangement the plate can be readily and easily secured to the tie in the manner described or with equal facility removedwtherefrom by simply withdrawing the spike from the hole 3 and then sliding the base away from and out of gengagement with the shank of the spikes at the other end.

A hollow cylindrical frame 4, integrally formed with the plate 2, has openings 5 to lighten the base, an interior integrally-formed strengthening-brace 6, and an exterior diagonally-arranged rib 7 on its top.

- The insulatingblock or support 8, made, preferably, of vitrified clay and cylindrical in form, is adapted to be secured on top of the frame 4 by means of a diagonal slot 9 in its under side, engaging the rib 7 on the top of the frame 4, and by bolts 10, the headed ends of which project into dovetailed recesses 10, formed in the under side of said block, and are permanently held therein by a cement filling 11, the threaded ends of said bolts passing through holes 12 in the top of said frame and having nuts 13 on their ends and interposed washers 14, and it will be appreciated by this arrangement that any strain exerted on the bolts will only tend to tighten them in their sockets and that by means of the engagement of the rib on the frame 4 with the'grooves in the block said block will be absolutely restrained from turning and that any lifting movement Will be prevented by the bolts.

The clamp 15 for supporting the rail on the insulating-block comprises two members 16 and 17, each member having a curved recess 18, which engages a circular flange 19 on the upper edge of said block, and an overhanging lug or ear 20 for engaging the flange of a rail, and the member 16 has a tongue 22 resting on the top of the insulating-block and its end projecting between guides 22' and through a slot 23 in the other member 17 and having an oval-shaped slot 24, through which a tapered pin 21 is inserted, said pin havinga serrated face which bears against the side of the member 17 and holds said members clamped tightly together, thereby securing said clamp immovable on theinsulating-block and clam pmg the rail tightly between the members thereof, and it will be appreciated that by this arrangement'the supports may first be secured to the top of the ties in any position and the clamp then turned around on the insulating-block to accommodate itself to the rail and be finally secured by forcing the tapered pin into the oval slot.

Referring to the modification of the support shown by Figs. 4 and 5, this form of my invention only differs from that of Figs. 1, 2,

\ and 3 in that the securing-plate 2 of the base 1 is provided with one open-ended slot at one end and one hole 25 at the other end. The frame 4 on said base is provided with two diagonal ribs 26, which engage two diagonal slots 27 in the insulating-block, and only a single bolt 28 is employed to secure thein- 'sulating-block to the base.

1 Referring to the modification of the insulating-block shown by Figs. 7 and 8', these forms of my invention only differ from that of Figs.

1, 2, and 3 in that in Fig. 6' the block 30 is of oval shapeand in Fig. 7 the block 31 is of squareor'angular shape.

In case of the employment of an angular or 'oval block the rail-supporting clamp is adjusted in definite position and is not turnable or movable around the block; but otherwise the construction of parts can be the same as herein described.

I do not desire to be understood as limiting myself to the details of construction and arrangement as herein described and illustrated, as it is manifest that variations and modifications may be made in the features of construction and arrangement and in the adaptation of the device to various conditions of use without departing from the spirit and scope of my invention and improvements. .1 therefore reserve the right "to all such variation and modification as properly fall within the scope of my invention and the terms of the following claims.

Having thus described my invention, I claim and desire to secure by Letters Patent- 1. An insulating-support for electric-conductor rails, comprising a base, an insulatingblock secured thereon and a rail-receiving ductor rails, comprising a base, an insulatingblock secured thereon and a two-part rail-receiving clamp secured on said block and movable around the same, substantially as described.

5. An insulating-support for electric-conductor rails, comprising a base, an insulatingblock secured thereon and an adjustable twopart rail-receiving clamp adjustably secured on and movable around said block, substantially as described.

6. An insulating-support for electric-conductor rails, comprising a base, an insulatingblock secured thereon and having a surrounding flange and a railreceiving clamp engaging said flange and movable thereon around said block, substantially as described.

7. An insulating-support for electric-conductor rails, comprising a base, an insulatingblock secured thereon and having a surrounding flange, and an adjustable rail-receiving clamp engaging said flange and movable thereon around said block; substantially as described.

8. An insulating support for electric-conductor rails, comprising a base, an insulatinglook secured thereon and having a surrounding flange and a two-part rail-receiving clamp engaging said flange and movable thereon around said block, substantially as described.

9. An insulating-support for electric-conductor rails, comprising a base having a rib on its top and bolt-holes and an insulating-block having a slot in its under side adapted to re ceive said rib and bolts adapted to project through the holes in said base and nuts on said bolts, substantially 'as described.

10. An insulating-support for electric-conductor rails, comprising a base having a rib on its top and bolt-holes, an insulating-block having a slot in its under side adapted to receive said rib and recesses, bolts secured in said recesses and extending through the holes in said base and nuts on said bolts, substantially as described.

11. An insulating-support for electric-conductor rails, comprising a base having a rib and bolt-holes, an insulating-block having a slot in its under side adapted to receive said rib and graduated recesses, bolts secured in said recesses and extending through the holes in said base and nuts on said bolts, substan tially as described.

12. An insulating-support of electric-conductor rails, comprising a base having boltholes, an insulating-block having recesses in its under side, bolts secured in said recesses and passing through the holes in said base and nuts on said bolts, substantially as described.

13. An insulating-support for electric-conductor rails, comprising a base having boltholes, an insulating-block having graduated. recesses in its under side, bolts secured in said recesses and passing through the holes in said base and nuts on said bolts, substantially as described.

14. An insulating-support for electric-con: ductor rails, comprising a base, an insulatingblock on said base, means projecting from the 'under surface of one of said parts adapted to engage meanson the other part for preventing a turning movement of said parts with relation to each other and means for preventing the separation of said parts, substantially as described.

15. An insulating-support for electric-con- I ductor rails, comprising a base, having means at one end adapted ,to be slid into engagement with engaging means on a tie and a hole at the other end adapted to receive a spike and an insulating-block secured on said base, substantially as described.

16. An ,insulating-suppo rt for electric-conductor rails, comprising a base having openended slots at one end and a hole at the other end to receive spikes for fastening it to a tie and an insulating-block secured on said base, substantially as described;

In testimony whereof I have signed my name in the presence of the subscribing witnesses.

WALTER HUBBARD BARNARD.

' Witnesses:

FANOHER NIooLL, B. L. MOLITOR. 

